I have heard great things about the Powermaster Regular Long Range tube with buckshot. They say do not use slugs in the Super tube and no sabot, solids or Brenneke in the RLR tube. Talking to one of the girls at Powermaster and was told that using Foster type slugs was ok, but she seemed to indicate that it was only for occasional use and with a clean tube. Anyone out there with extensive use of the Powermaster and slugs that might enlighten me about this? I am getting started in Tactical Shotgun shooting and need to be able to shoot extended numbers of round using slugs and buck as the course requires. Thanks, Jim